Control for recoil



27, 1940. R. H. s. HUGHES 2,212,683

CONTROL FOR REGOIL Filed Jan. 19, 1937 Evita/H 5. $66235 Patented Aug. 27, 1940 rENr' oon'rnoi. FOB/ nEooiL Robert H. s. Hughes, Baltimore, Md, assignor of one-half to Milton Roberts, Baltimore, Md.

Application January 19, 1937, Serial No. 121,359 6 Claims. (01. 8914) My invention relates to arecoil control mech-' anism, and it is of particular use in connection with the control of recoil of firearms such as cannon, shot guns, pistols, rifles, and so forth.

This application is an improvement upon my copending applications Serial Nos. 39, l92,'fiied September 6, 1935 and 58,574, filed January 10-,

In recoil mechanisms it is desirable that the port area be as large as possible; preserving strength. Moreover it is desirable that the maximum reaction surface on the gas shoulder in the gas chamber be in line and covered by the projected port areas.

It is an object of my invention to provide for alarge port area for release of reaction forces Without the ports running into each other, and to on the gas shoulder.

In order to make my invention more clearly understood, I have shown in the accompanying drawing means for carrying the same into p'ractical efiect without limiting the improvements in their useful applications to the particular constructions which, for the purpose of explanation, have been made the subject of illustration.

In the drawing:

Figure 1 is a cross sectional view taken through the longitudinal axis of my recoil mechanism;

Fig. 2 is a view taken along the line 2-2 of Figure 1 looking in the direction of the arrows;

Fig. 3 is a diagrammatic sectional view of my recoil mechanism showing how the projected port area falls on the gas shoulder;

Fig. 4 is a diagrammatic view showing the proby the numeral 3.

the gas seal 6.

wardly to eliminate'recoil.

jected port areas on the gas shoulder taken from a view looking directly at the gas shoulder; Fig. 5 is a diagrammatic view showing the positionof the axes of the bores of the ports with respect to the axis of the bore of the firearm.

Referring to the drawing I have shown a firearm .having a barrel I, which is provided with screw threads 2, on-which is screwed a recoil control device Which I have generally indicated The recoil control device comprises a body 4, a gas chamber 5 and a gas seal 6. I

The gas chamber 5 is frusto-c'onical in shape and terminates at its forward end in a gas shoulder 1. Theperiphery of the gas shoulder is constructed to substantially coincide; with the base of the co-ne'of expanding gases from the muzzle of the firearm. Theend of the muzzle I have indicated by the numeral 8..

"Rearwardly directed'gas ports are provided around the top, the sides and a portion of the bottom of my recoil mechanism. The top gas port I have indicated by the numeral 9, and there are'pairsfof complemental gas portsw, H and I2. These gas ports are" so arranged that their inner ends lie adjacent the gas shoulder and the prolongation of the outer sides of the ports substantially coincide withthe periphery of the gas shoulder.

It will be apparent for-instance that the port 9 (see Fig. 3) when its area is projected, as'indicated by dotted line l3,will form "an area i l (see Fig. 4) whichsubstantiallyli'es wholly on the gas shoulder. In practice a slight overlap is permissible at the inside of this area, the projected area of the port in part lapping over The gas seal 6 is slightlylarger than the diameter of the bullet and the gas shoulder and gas, seal with the bullet in it provide for an area of reaction which will permit the gasesin the gas chamber to expand rear The climb of the firearm is minimized by not having the gas ports extend all the way along the lower side of the recoil device 3.

The axis of the bore of port 9, as indicated by line l5, may substantially cross the axis of the bore of the firearm, which axis I have indicated by the numeral Hi. The axes I! of the pair of complemental ports Ill which are similarly skewed do not cross the axis [6 of the bore of the firearm. Similarly the axes ill of the complemental pair of ports II, which are similarly formed, do not cross the axis N5 of the bore of the firearm.

CE f 1 mg; s.

It is to be noted that-the axes' 18 in their extensions arefurther-from the bore of the firearm than are'the axes l1. In'like manner the axes [9 of the bore of the complemental pair of ports l2 are still further from the axis 56 of the bore of the-firearm than are any of the other axes of the bores of the ports. 7

Referring again to Figure 4, it is to be noted that the projections 23 of the bores of the ports I overllpbut slightlythe projection M of the bore of the port 9. There is also but slight overlapping between the projections 2| of the bores of ports H on the gas shoulder 1. Again the projections 22 of the bores of ports l2 but comes throughhavin'g minimizationgof the rerea action of the ports one withthe other.

1 A recoil ebhtrol' mechanismfol a firearm "pted to fire aprojectile-comprising a body p tion with rearwardlyi directed ports, a, gas

rn'ber io'rmed in the body portion, some fof the ports having bores-whose axes do "not cross the a 's of the bore of the f rearm, said ports being we mnemema pa r Qfs m 'arlwrts a e-ind e be no b h =t ns w e the axes o'i the bores of the port and 'the axis' of the bore of the firearm increasing with each comof port'sirom the top of the body p'lemental pair downward. I I W 2.'A recoil 'eontrol'mechanisn'i' flora firearm adapted to fire a; projectile comprising a body portion with-rearwardly" directed ports, a j gas chamber formed in the bodyfportionjsome of the pid a in bor s. wh eiaxs do n t art st" th axis of the bore. of" the fir'arrn; saidport's being arranged in comp icnlental pairs of similar ports arun y b x porti n; the d stanc between the axe sol the bores of the ports an the of the bore of the firearm increasing with-each complemental pair ofports fror'rlthe top of the body downward, said ports being omitted near the bottom p: the body.

.fi amines- 1?. m in 9 r ition with. re ward n r ct po s, m ns t d the body adjacent the bore of the firearm at the muzz1e, a ga'suchamber formed in the body,.and a 7 By skewing the ports large portareas can the muzzle, some "of the ports having bores whose axes do not cross the axis of the bore of the firearm, said ports being arranged in complemental pairs of similar ports around the body portion,

the distance between the axes of the bores of the ports and the axis of the bore of the firearm increasing with each complemental pair of ports from the top of the body downward, said ports being omitted near the bottom of the body.

4. A recoil control mechanism for a firearm adapted to fire a projectile comprising a body portion with rearwardly directed ports, a gas chamber formed in the body portion, a gas shoulder in the chamber against which gases from the bore expand the inner ends of the ports when projected lying substantially wholly on the gas shoulder, some of the ports having bores whose axes donot cross the axis of the bore of the firearm, said ports being arranged in complemental pairs of similar ports around thebody portion, the distance between the axes of the bores of the ports and the axis of the bore of the firearm increasing with each complemental pair of ports fromthe top of the body downward.

v 5. A recoil control device for a firearm adapted to fire a projectile comprising a bodyportion with rearwardly directed ports, a gas chamber formed in the bodyportion, a gas shoulder in the chamber against which the gases from the bore expand, the inner ends of the ports when projected lying substantially. wholly on the gas shoulder, some of the ports having bores whose axes do not cross the axis of the bore ofthe firearm, said ports being arranged in co'inp'l'e mental pairs of similar ports around the body portion, the distance between the axes of the bores of the ports and the axis of the boreofthe firearm increasing with each complemental pair of ports from the top of the body downward, said 7 ports being omitted near the bottom of the body.

an inlet port and a'seal port at therear andfor- 1 ward ends of said chamber, respectively, and a shoulder extending laterally from the inner end of the seal port to the side Wall of the chamber, said device having an arcuate seriesof discharge ports extending rearwardly and outwardly from the forward part of the chamber, the axes oi seine of said discharge ports being so positioned as not to intersect the axis of the seal port, the

angulari'ty ofthe axis of at least oneof such last named discharge portsto the projection of the axis of the seal port on a plane parallelwith the axis of the seal port and containing the axis of said discharge port being different from the angularity of the axis of another of such discharge ports when'sirnilarly measured:

ROBERT H. SJHUGHE S'. 

